title: Periodontal condition of the mandibular anterior dentition in patients with conventional and self-ligating brackets.
abstract: OBJECTIVE
  To explore whether the use of self-ligating brackets is associated with better values for periodontal indices because of the lack of elastomeric modules and concomitantly, reduced availability of retentive sites for microbial colonization and plaque accumulation.
  
  
  METHODS
  Private practice of the first author. Patients were selected using the following inclusion criteria: age range 12-17 years, fixed appliances on both arches, aligned mandibular arch, and absence of oral habits and anterior crossbites.
  
  
  METHODS
  Prospective cohort investigation. Participants were grouped for bracket type, thus 50 patients formed the conventional bracket cohort and 50 patients the self-ligating bracket cohort. Both cohorts were followed with the purpose to examine periodontal status. Average length of follow-up was 18 months. This time period was considered adequate for a proportion of study participants to experience the outcome of interest. Outcome variables were plaque index, gingival index, calculus index, and probing depth for the two bracket cohorts.
  
  
  RESULTS
  No difference was found in the indices recorded between the two bracket cohorts studied.
  
  
  CONCLUSIONS
  Under the conditions as applied in this study, the self-ligating brackets do not have an advantage over conventional brackets with respect to the periodontal status of the mandibular anterior teeth.
authors.affiliation: Department of Preventive and Community Dentistry, School of Dentistry, University of Athens, Athens, Greece.
authors.forename: N
authors.initials: N
authors.lastname: Pandis
authors.forename: K
authors.initials: K
authors.lastname: Vlachopoulos
authors.forename: A
authors.initials: A
authors.lastname: Polychronopoulou
authors.forename: P
authors.initials: P
authors.lastname: Madianos
authors.forename: T
authors.initials: T
authors.lastname: Eliades
mesh_terms: D000293:Adolescent; D002648:Child; D003774:Dental Plaque Index; D005260:Female; D006801:Humans; D008297:Male; D008334:Mandible; D009911:Oral Hygiene Index; D016382:Orthodontic Appliance Design; D016910:Orthodontic Brackets; D010512:Periodontal Index; D010514:Periodontal Pocket / Q000473:pathology*; D011446:Prospective Studies